Debris from a Chinese rocket is expected to fall back to Earth in an uncontrolled re-entry this weekend.
The main segment from the Long March-5b vehicle was used to launch the first module of China's new space station last month.
At 18 tonnes it is one of the largest items in decades to have an undirected dive into the atmosphere.
Big Chinese rocket segment set to fall to Earth
Tracking radars are following closely the gradual fall to Earth of a large Chinese rocket vehicle.

